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trimerous

[ trim-er-uhs ]

adjective

  1. Botany. (of flowers) having members in each whorl in groups of three.
  2. Entomology. having three segments or parts.

trimerous

/ ˈtrɪmərəs /

adjective

  1. (of plants) having parts arranged in groups of three
  2. consisting of or having three parts
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

trimerous

/ trĭm′ər-əs /

  1. Having three similar parts or segments.
  2. Having flower parts, such as petals, sepals, and stamens, in sets of three.
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Word History and Origins

Origin of trimerous1

1820–30; < New Latin trimerus, equivalent to trimer- ( trimer ) + -us -ous
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Example Sentences

A very minute joint at the base of the claw-joint, in most Tetramerous and Trimerous beetles.

Trimerous insects are those whose tarsi consist of only three joints.

So in fuchsias, a very common deviation consists in a trimerous and rarely a dimerous symmetry of the flower.

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